Reference for Yoma 116:2

רבי אליעזר אומר במקומו היה עומד ומחטא

THEN HE BEGINS TO SPRINKLE<span class="x" onmousemove="('comment',' Lit.,'to cleanse from sin'.');">³</span> DOWNWARD.<span class="x" onmousemove="('comment',' Lit., 'he goes down' i.e., he applies the blood to the horn of the altar beginning at the top and leading his finger downward.');">⁴</span>

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